aton·al
(ˌ)ā-ˈtō-nᵊl
(ˌ)a-
: marked by avoidance of traditional musical tonality
especially
: organized without reference to key or tonal center and using the tones of the chromatic scale impartially
aton·al·ism
(ˌ)ā-ˈtō-nə-ˌli-zəm
(ˌ)a-
plural -s
1
: the avoidance of traditional tonality as a principle of musical composition
2
: musical composition in atonal style
3
: the theory of atonal composition
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Merriam-Webster unabridged



